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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
Single
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0.64ct Blue Kyanite, Round, SI

0.64ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 15.94

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1.99ctw Green Tsavorite Garnet, Baguette, VS
Tsavorite Garnet Product Video (393589)

1.99ctw Green Tsavorite Garnet, Baguette, VS

3 x 2 mm (calibrated)

$ 99.93

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46.97ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

46.97ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

16.9 mm

$ 102.92

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1.27ct Yellow Color-Change Diaspore, Baguette, VVS-VS

1.27ct Yellow Color-Change Diaspore, Baguette, VVS-VS

8.8 x 4.6 mm

$ 60.85

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0.76ctw Green Peridot, Pear Shape, VVS-VS

0.76ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 12.49

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3.68ct Pink Strawberry Quartz, Oval, Translucent

3.68ct Pink Strawberry Quartz, Oval, Translucent

13.1 x 9.5 mm

$ 22.10

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3.68ctw Brown Tourmaline, Oval, VVS-VS
Tourmaline Product Video (401650)

3.68ctw Brown Tourmaline, Oval, VVS-VS

6.8 x 5.4 mm

$ 150.79

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32.87ctw Brown Rutile Quartz, Sphere / Ball, Transparent

32.87ctw Brown Rutile Quartz, Sphere / Ball, Transparent

13 mm (calibrated)

$ 36.01

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1.56ct Purple Spinel, Cushion, VVS-VS

1.56ct Purple Spinel, Cushion, VVS-VS

6.9 x 6.6 mm

$ 114.86

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13.35ct Multicolor Ruby-Zoisite, Oval, Opaque

13.35ct Multicolor Ruby-Zoisite, Oval, Opaque

18 x 13 mm (calibrated)

$ 43.88

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12.74ct Gray Jadeite, Oval, Translucent

12.74ct Gray Jadeite, Oval, Translucent

20 x 15 mm (calibrated)

$ 41.87

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1.88ct Red Almandine Garnet, Heart, VS

1.88ct Red Almandine Garnet, Heart, VS

7.7 x 7.4 mm

$ 54.61

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2.38ct Green Peridot, Cushion, VS
Peridot Product Video (437870)

2.38ct Green Peridot, Cushion, VS

8.5 x 6.9 mm

$ 91.27

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1.26ct Orange Hessonite Garnet, Oval, VS

1.26ct Orange Hessonite Garnet, Oval, VS

7.3 x 6.1 mm

$ 23.85

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0.66ct Green Peridot, Oval, VVS-VS

0.66ct Green Peridot, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 11.84

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31.50ct Multicolor Jasper, Oval, Opaque

31.50ct Multicolor Jasper, Oval, Opaque

30.1 x 20.6 mm

$ 19.68

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3.19ct Red Almandine Garnet, Pear Shape, VS

3.19ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 26.48

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18.77ct Violet Amethyst, Emerald Cut, VVS
Amethyst Product Video (692477)

18.77ct Violet Amethyst, Emerald Cut, VVS

18.1 x 14 mm

$ 130.87

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0.39ct Orange Carnelian, Marquise, Transparent

0.39ct Orange Carnelian, Marquise, Transparent

8 x 4 mm (calibrated)

$ 1.95

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2.04ct Yellow Beryl, Oval, VS

2.04ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 50.80

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2.28ctw Red Pyrope Garnet, Marquise, VVS-VS

2.28ctw Red Pyrope Garnet, Marquise, VVS-VS

10.1 x 5.1 mm

$ 19.98

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1.33ct Purple Sapphire, Pear Shape, VS-SI
Sapphire Product Video (448508)

1.33ct Purple Sapphire, Pear Shape, VS-SI

7.2 x 5.7 mm

$ 638.49

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24.36ct White Scolecite, Cushion, Opaque

24.36ct White Scolecite, Cushion, Opaque

26.3 x 23.9 mm

$ 28.83

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1.35ct Yellow Citrine, Emerald Cut, VVS-VS

1.35ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 9.41

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

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IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

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Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

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good navigation and simple interface.

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Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

Posted By Willow in August, 2026
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I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
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Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
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